Jquery Win7中Chrome的外部接口行为

我的网站上有一个mp3player swf。 当mp3文件完全加载到我的swf中时，为了显示页面并开始播放音乐，我添加了一个动作脚本函数来发送一个调用外部接口 当mp3文件已完全加载时

作为

我的html jquery函数

function JSCallback()
{
// Finish load swf and hide overlay
$('#loader-overlay').fadeOut('slow');
}

此方法在Internet Explorer 8、Firefox、Chrome和XP上的Opera中运行良好。 在Firefox上的Win7中，IE 10运行良好，而chrome则在音乐完全加载并显示页面之前开始播放音乐。 你知道怎么解决这个问题吗？谢谢

全班

package xxx.xxx.xxx.sound {

import flash.display.MovieClip;
import flash.events.Event;
import flash.events.IOErrorEvent;
import flash.events.MouseEvent;
import flash.geom.ColorTransform;
import flash.media.Sound;
import flash.media.SoundChannel;
import flash.media.SoundMixer;
import flash.net.URLRequest;
import flash.utils.ByteArray;
import flash.text.TextField;
import flash.external.ExternalInterface;

public class MP3Player extends MovieClip {

    // Location of the config xml file
    public static const CONFIG_XML_URL:String = "xml/config.xml";

    // URL of the mp3 file
    public static var MP3_URL:String = "mp3/track.mp3";

    // Main color for the mp3 player
    public static var MAIN_COLOR:uint = 0xFF0000;

    // An XMLLoader to load the configuration file
    private var xmlLoader:XMLLoader;

    // Sound object to be played
    private var mp3:Sound = new Sound();

    // A sound channel to play the sound object
    private var channel:SoundChannel;

    // Holds the pause position
    private var pausePos:Number;

    // A byte array to read spectrum
    private var bytes:ByteArray = new ByteArray();

    // Indicates whether the mp3 player is playing or not.
    private var _isPlaying:Boolean = false;

    // Holds the previous label color
    private var _prevColor:uint;        

    public function MP3Player() {

        // Initialize the player
        init();

    }

    /**
     * Initializes the player.
     */
    private function init():void {

        // Use as a button
        useHandCursor = true;
        buttonMode = true;
        mouseChildren = false;
        equalizer.alpha = 0;

        // Add necessary event listeners
        addEventListener(Event.ENTER_FRAME, onEnterFrame, false, 0, true);
        addEventListener(MouseEvent.MOUSE_DOWN, onMouseDown, false, 0, true);
        addEventListener(MouseEvent.MOUSE_OVER, onMouseOver, false, 0, true);
        addEventListener(MouseEvent.MOUSE_OUT, onMouseOut, false, 0, true);
        loadConfig();

    }

    /**
     * Sets the color of the player to the given parameter.
     */
    public function setColor(color:uint):void {

        MAIN_COLOR = color;

        // Change the color of the equalizer
        var colorTransform:ColorTransform = equalizer.transform.colorTransform;
        colorTransform.color = MAIN_COLOR;
        equalizer.transform.colorTransform = colorTransform;

    }


    /**
     * Loads the configuration file to the memory.
     */
    private function loadConfig() {

        // Start loading the config.xml file
        xmlLoader = new XMLLoader(CONFIG_XML_URL);
        xmlLoader.addEventListener(XMLLoader.XML_LOADED, onXMLLoaded);
        xmlLoader.load();

    }

    /**
     * This method is called when the xml file is loaded to the memory.
     */
    private function onXMLLoaded(evt:Event):void {

        // Get configuration parameters
        var xml:XML = xmlLoader.getXML();
        MP3_URL = xml.@mp3URL;
        MAIN_COLOR = xml.@color;

        // Change the color of the equalizer
        equalizer.alpha = 1;
        setColor(MAIN_COLOR);

        // Start loading the mp3
        loadMP3();

    }

    /**
     * Start loading the mp3 file.
     */
    private function loadMP3():void {

        mp3.load(new URLRequest(MP3_URL));
        mp3.addEventListener(IOErrorEvent.IO_ERROR, onIOError, false, 0, true);
        channel = mp3.play();
        channel.addEventListener(Event.SOUND_COMPLETE, onSoundComplete, false, 0, true);            
        _isPlaying = true;

        // Load complete function
        mp3.addEventListener(Event.COMPLETE, onLoadComplete);
    }

    /**
     * This method is called whenever a new enter frame event occurs.
     */
    private function onEnterFrame(evt:Event):void {

        try {
            SoundMixer.computeSpectrum(bytes, true, 0);
        } catch (e:Error) {
        }

        equalizer.update(bytes);

    }

    /**
     * This method is called when playing the sound is finished.
     */
    private function onSoundComplete(evt:Event):void {

        // Loop
        channel = mp3.play();
        channel.addEventListener(Event.SOUND_COMPLETE, onSoundComplete, false, 0, true);
        _isPlaying = true;

    }

    /**
     * This method is called when the mouse is over the mp3 player.
     */
    private function onMouseOver(evt:MouseEvent):void {

        // Change the color of the equalizer
        _prevColor = label.textColor;
        label.textColor = MAIN_COLOR;

    }

    /**
     * This method is called when the mouse leaves the mp3 player.
     */
    private function onMouseOut(evt:MouseEvent):void {

        label.textColor = _prevColor;

    }

    /**
     * This method is called when the mouse is clicked on the mp3 player.
     */
    private function onMouseDown(evt:MouseEvent):void {

        if (_isPlaying) {
            pausePos = channel.position;
            channel.stop();
            _isPlaying = false;
            label.text = "MUSIC OFF";               
        } else {
            channel = mp3.play(pausePos);
            channel.addEventListener(Event.SOUND_COMPLETE, onSoundComplete, false, 0, true);
            _isPlaying = true;
            label.text = "MUSIC ON";
        }

    }

    /**
     * This method is called when load complete and sent call to js.
     */
    private function onLoadComplete(e:Event):void {
            // This will call a JavaScript function
            //ExternalInterface.call('loadedCallback');
        if (ExternalInterface.available)
            {
                ExternalInterface.call("JSCallback");
            }

    }

    /**
     * This method is called if an IO error occurs.
     */
    private function onIOError(evt:IOErrorEvent):void {
    }

}

 }

---

您的问题是，在方法

loadMP3（）

中，

mp3.play（）

在

mp3.load（）

之后立即调用。这意味着音乐必须尽快开始。对于声音类，“尽快”不是“在mp3充满电后”，而是“只要我有足够的数据”

如果要将音乐延迟到文件完全加载之后，则必须从

loadMP3（）

中删除

play（）

，然后将其添加到

onLoadComplete（）

[……]

---

你能告诉我们你的代码中调用mp3的load（）和play（）方法的部分吗？请记住，在使用

Sound

类时，您不需要在开始播放之前完全下载文件。我发布了完整的类。我想改变这个类，我发现已经做了，但不幸的是，我不能得到我想要的。如果你能帮忙，我将不胜感激。thanksOk这可能是一个很好的解决方案，但是如果我想在音乐开始播放时使用ExternalInterface调用，而不是在声音满负荷时使用ExternalInterface调用，我该怎么做呢？感谢使用

ExternalInterface.addCallback（）

，您可以创建一个可以由JS脚本调用的方法。请在AS3参考中查找：

package xxx.xxx.xxx.sound {

import flash.display.MovieClip;
import flash.events.Event;
import flash.events.IOErrorEvent;
import flash.events.MouseEvent;
import flash.geom.ColorTransform;
import flash.media.Sound;
import flash.media.SoundChannel;
import flash.media.SoundMixer;
import flash.net.URLRequest;
import flash.utils.ByteArray;
import flash.text.TextField;
import flash.external.ExternalInterface;

public class MP3Player extends MovieClip {

    // Location of the config xml file
    public static const CONFIG_XML_URL:String = "xml/config.xml";

    // URL of the mp3 file
    public static var MP3_URL:String = "mp3/track.mp3";

    // Main color for the mp3 player
    public static var MAIN_COLOR:uint = 0xFF0000;

    // An XMLLoader to load the configuration file
    private var xmlLoader:XMLLoader;

    // Sound object to be played
    private var mp3:Sound = new Sound();

    // A sound channel to play the sound object
    private var channel:SoundChannel;

    // Holds the pause position
    private var pausePos:Number;

    // A byte array to read spectrum
    private var bytes:ByteArray = new ByteArray();

    // Indicates whether the mp3 player is playing or not.
    private var _isPlaying:Boolean = false;

    // Holds the previous label color
    private var _prevColor:uint;        

    public function MP3Player() {

        // Initialize the player
        init();

    }

    /**
     * Initializes the player.
     */
    private function init():void {

        // Use as a button
        useHandCursor = true;
        buttonMode = true;
        mouseChildren = false;
        equalizer.alpha = 0;

        // Add necessary event listeners
        addEventListener(Event.ENTER_FRAME, onEnterFrame, false, 0, true);
        addEventListener(MouseEvent.MOUSE_DOWN, onMouseDown, false, 0, true);
        addEventListener(MouseEvent.MOUSE_OVER, onMouseOver, false, 0, true);
        addEventListener(MouseEvent.MOUSE_OUT, onMouseOut, false, 0, true);
        loadConfig();

    }

    /**
     * Sets the color of the player to the given parameter.
     */
    public function setColor(color:uint):void {

        MAIN_COLOR = color;

        // Change the color of the equalizer
        var colorTransform:ColorTransform = equalizer.transform.colorTransform;
        colorTransform.color = MAIN_COLOR;
        equalizer.transform.colorTransform = colorTransform;

    }


    /**
     * Loads the configuration file to the memory.
     */
    private function loadConfig() {

        // Start loading the config.xml file
        xmlLoader = new XMLLoader(CONFIG_XML_URL);
        xmlLoader.addEventListener(XMLLoader.XML_LOADED, onXMLLoaded);
        xmlLoader.load();

    }

    /**
     * This method is called when the xml file is loaded to the memory.
     */
    private function onXMLLoaded(evt:Event):void {

        // Get configuration parameters
        var xml:XML = xmlLoader.getXML();
        MP3_URL = xml.@mp3URL;
        MAIN_COLOR = xml.@color;

        // Change the color of the equalizer
        equalizer.alpha = 1;
        setColor(MAIN_COLOR);

        // Start loading the mp3
        loadMP3();

    }

    /**
     * Start loading the mp3 file.
     */
    private function loadMP3():void {

        mp3.load(new URLRequest(MP3_URL));
        mp3.addEventListener(IOErrorEvent.IO_ERROR, onIOError, false, 0, true);
        channel = mp3.play();
        channel.addEventListener(Event.SOUND_COMPLETE, onSoundComplete, false, 0, true);            
        _isPlaying = true;

        // Load complete function
        mp3.addEventListener(Event.COMPLETE, onLoadComplete);
    }

    /**
     * This method is called whenever a new enter frame event occurs.
     */
    private function onEnterFrame(evt:Event):void {

        try {
            SoundMixer.computeSpectrum(bytes, true, 0);
        } catch (e:Error) {
        }

        equalizer.update(bytes);

    }

    /**
     * This method is called when playing the sound is finished.
     */
    private function onSoundComplete(evt:Event):void {

        // Loop
        channel = mp3.play();
        channel.addEventListener(Event.SOUND_COMPLETE, onSoundComplete, false, 0, true);
        _isPlaying = true;

    }

    /**
     * This method is called when the mouse is over the mp3 player.
     */
    private function onMouseOver(evt:MouseEvent):void {

        // Change the color of the equalizer
        _prevColor = label.textColor;
        label.textColor = MAIN_COLOR;

    }

    /**
     * This method is called when the mouse leaves the mp3 player.
     */
    private function onMouseOut(evt:MouseEvent):void {

        label.textColor = _prevColor;

    }

    /**
     * This method is called when the mouse is clicked on the mp3 player.
     */
    private function onMouseDown(evt:MouseEvent):void {

        if (_isPlaying) {
            pausePos = channel.position;
            channel.stop();
            _isPlaying = false;
            label.text = "MUSIC OFF";               
        } else {
            channel = mp3.play(pausePos);
            channel.addEventListener(Event.SOUND_COMPLETE, onSoundComplete, false, 0, true);
            _isPlaying = true;
            label.text = "MUSIC ON";
        }

    }

    /**
     * This method is called when load complete and sent call to js.
     */
    private function onLoadComplete(e:Event):void {
            // This will call a JavaScript function
            //ExternalInterface.call('loadedCallback');
        if (ExternalInterface.available)
            {
                ExternalInterface.call("JSCallback");
            }

    }

    /**
     * This method is called if an IO error occurs.
     */
    private function onIOError(evt:IOErrorEvent):void {
    }

}

 }

private function loadMP3():void {

    mp3.load(new URLRequest(MP3_URL));
    mp3.addEventListener(IOErrorEvent.IO_ERROR, onIOError, false, 0, true);
    /* // removed
    channel = mp3.play();
    channel.addEventListener(Event.SOUND_COMPLETE, onSoundComplete, false, 0, true);            
    _isPlaying = true;
    /**/

    // Load complete function
    mp3.addEventListener(Event.COMPLETE, onLoadComplete);
}

private function onLoadComplete(e:Event):void {
    channel = mp3.play();
    channel.addEventListener(Event.SOUND_COMPLETE, onSoundComplete, false, 0, true);            
    _isPlaying = true;
    if (ExternalInterface.available)
    {
        ExternalInterface.call("JSCallback");
    }

}